-79.57% is the change from 847 to 173
Calculation steps:
[( 173 - 847 ) ÷ 847] x 100 = -79.57%
Formula
Percentage change = [(173 - 847) / 847] x 100
Subtract the new number by the original number
173 - 847 = -674
-674 ÷ 847 = -0.7957497048406139
-0.7957497048406139 x 100 = -79.57%